The Vermont Fish and Wildlife Department imposes rules that require any wood-fueled biomass electricity generators to obtain fuel harvested according to the Vermont Public Service Board standards. These rules also require suppliers to receive approval from VFW prior to harvesting. The rules are established in 30 V.S.A. Chapter 5 section 248:
http://www.leg.state.vt.us/statutes/fullsection.cfm?Title=30&Chapter=005&Section=00248